中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

157 records (took 0.029 seconds)

    RUST-PREVENTION OIL COMPOSITION AND SCREW JOINT FOR OIL WELL PIPE FORMED WITH FILM THEREOF
    41.
    发明专利
    RUST-PREVENTION OIL COMPOSITION AND SCREW JOINT FOR OIL WELL PIPE FORMED WITH FILM THEREOF 失效

    公开(公告)号：JP2001099364A

    公开(公告)日：2001-04-10

    申请号：JP27969599

    申请日：1999-09-30

    Applicant: SUMITOMO METAL IND

    Inventor： YAMAMOTO HIDEO ,  NAKASUJI KAZUYUKI

    IPC: F16L15/04 ,  C23F11/00

    Abstract: PROBLEM TO BE SOLVED: To provide a screw joint for oil well pipe excellent in seizure resistance and airtightness and rust-prevention oil composition used for the screw joint for oil well pipe by suppressing generation of rust and eliminating instability of fastening torque without using compound grease. SOLUTION: A solid lubricating film is formed on either one of a box and a pin constituting a screw joint and a rust-prevention film is formed on the other. Or, solid lubricating films are formed on both of the box and the pin and a rust-prevention film is formed on at least either one of the solid lubricating films of the box and the pin. The solid lubricating film is made a film of inorganic high molecular compound in which resin or M(metal) -O is made as a skeletal structure. The rust- prevention film is made of rust-prevention oil composition in which alkaline metal salt of carboxylic acid and/or alkaline earth metal salt of carboxylic acid are included, a saponification value is 20 to 150 mgKOH/g, a whole basic value is 15 to 100 mgKOH/ g and total content of alkaline metal and alkaline earth metal is 2 to 20 mass %. It is desirable that rust-prevention oil composition includes lubricant made of one kind or more of graphite, molybdenum disulfide and organic Mo compound by 5 to 30 mass %.

    SCREW JOINT FOR OIL WELL PIPE
    42.
    发明专利
    SCREW JOINT FOR OIL WELL PIPE 失效

    公开(公告)号：JP2001065754A

    公开(公告)日：2001-03-16

    申请号：JP24189299

    申请日：1999-08-27

    Applicant: SUMITOMO METAL IND

    Inventor： YAMAMOTO HIDEO ,  NAKASUJI KAZUYUKI

    IPC: F16L15/04 ,  C23C22/00 ,  C23C28/00

    Abstract: PROBLEM TO BE SOLVED: To provide a threaded joint for an oil well pipe having the material of carbon steel or low alloy steel of Cr containing quantity of less than 10 wt.%, for suppressing the generation of galling to repititive fastening and unfasting, in mining crude oil under environments of deep depth, high- temperature oil well, or a high-temperature environment such as a steam injection oil well, and excellent in airtightness. SOLUTION: A phosphate chemically treated coat 9 is formed on the nonthreaded metal contacting part of at least any one side of a box and a pin 21, and moreover lubricating coat 6 of an inorganic macromolecular compound 7, dispersedly mixed with molybdenum disulfite and/or graphite, is formed on the coat 9. The weight ratio (B/A) between the containing quantity of the compound 7 (A) and that of the total of the molybdenum and the graphite (B) is 0.3-9.0, and the coat thickness of the coat 6 is preferably 5-30 μm.

    SCREW JOINT FOR OIL WELL PIPE
    43.
    发明专利
    SCREW JOINT FOR OIL WELL PIPE 失效

    公开(公告)号：JP2001065751A

    公开(公告)日：2001-03-16

    申请号：JP24188999

    申请日：1999-08-27

    Applicant: SUMITOMO METAL IND

    Inventor： YAMAMOTO HIDEO ,  NAKASUJI KAZUYUKI

    IPC: F16L15/04

    Abstract: PROBLEM TO BE SOLVED: To provide the screw joint for an oil well pipe excellent in an air tightness for restraining the occurrence of a goaling against the repeated tightening and loose back in the crude oil mining under such a high temperature environment as a deep oil well, high temperature oil well or vapour injection oil well. SOLUTION: A Cu plated layer 9 is formed on the nonthreaded metal contact part of at least either oneside of a pin 2 and box and a lubrication film 6 is further formed on the Cu plated layer 9, with an inorganic high polymeric compound whose skeleton is a resin or M (metal)-O dispersed and mixed molybdenum disulfied and/or graphite. Or the Cu plated layer 9 is formed on the nonthreaded metal contact part of either oneside of the pin 2 and box and the lubrication film of the inorganic high polymeric compound whose skeleton is the resin or M (metal)-O dispersed and mixed molybdenum disulfied and/or graphite is formed on the other nonthreaded metal contact part. The weight ratio (B/A) between the contact (A) of the inorganic high polymeric compound whose skeleton is the resin or M (metal)-O and the total content (B) of molybdenum disulfied and graphite is favorably 0.3∼0.9.

    METHOD FOR COLD-ROLLING STAINLESS STEEL SHEET
    46.
    发明专利
    METHOD FOR COLD-ROLLING STAINLESS STEEL SHEET 失效

    公开(公告)号：JPH10277604A

    公开(公告)日：1998-10-20

    申请号：JP8673297

    申请日：1997-04-04

    Applicant: SUMITOMO METAL IND

    Inventor： YAMAMOTO HIDEO ,  MATSUSHITA SATORU

    IPC: B21B3/02 ,  B21B1/22 ,  B21B27/10 ,  B21B45/02

    Abstract: PROBLEM TO BE SOLVED: To provide a cold-rolling method for obtaining a steel sheet having high glossiness by executing high-speed rolling using the same emulsion of rolling oil for either of ferritic and austenitic stainless steel sheets. SOLUTION: The diameter of a work roll is taken as 50-120 mm, the viscosity of the original liquid of the emulsion of rolling oil as 6 to =60 mpm while supplying the emulsion of rolling oil to rolls and the steel sheet. In the case of the ferritic stainless steel sheet, at the time of rolling in at least one pass before finish rolling pass, the supply of the emulsion of rolling oil to the steel sheet is stopped, the original liquid of the rolling oil is supplied. In the case of the austenitic stainless steel, the original liquid of the rolling oil is supplied to the steel sheet on the inlet side of the 1st pass and the emulsion of the rolling oil whose average particle size is

    WATER-SOLUBLE COLD ROLLING OIL AGENT FOR STAINLESS STEEL PLATE AND ROLLING
    47.
    发明专利
    WATER-SOLUBLE COLD ROLLING OIL AGENT FOR STAINLESS STEEL PLATE AND ROLLING 失效

    公开(公告)号：JPH10273688A

    公开(公告)日：1998-10-13

    申请号：JP7763597

    申请日：1997-03-28

    Applicant: KYODO YUSHI ,  SUMITOMO METAL IND

    Inventor： SAKAKIBARA MASAYOSHI ,  OIKAWA ISAO ,  YAMAMOTO HIDEO ,  MATSUSHITA SATORU

    IPC: C10M169/04 ,  C10N20/02 ,  C10N30/02 ,  C10N30/04 ,  C10N30/06 ,  C10N30/08 ,  C10N40/24

    Abstract: PROBLEM TO BE SOLVED: To obtain the subject oiling agent exhibiting a low viscosity and an excellent lubricating property, capable of reducing an adhesion amount and the generation of seizing, and useful for producing highly lustrous stainless steel plates by a high speed rolling method by compounding a specific base oil, a surfactant and an extreme-pressure agent. SOLUTION: This water-soluble cold rolling oil agent comprises (A) a base oil comprising a mineral oil, a synthetic water (e.g. having 15-30 carbon atoms) or a synthetic hydrocarbon oil and having a viscosity of /s, preferably 4-6 mm /s, at 40 deg.C, (B) a surfactant such as a nonionic surfactant (e.g. a sorbitan surfactant having an HLB of >=13) or an anionic surfactant, and (C) an extreme- pressure agent such as a sulfur-based extreme-pressure agent having a sulfur content of >=10 wt.% and a phosphorus-based extreme-pressure agent having a phosphorus content of >=5 wt.%. The oiling agent preferably contains the components B and C in amounts of 5-30 wt.% and 1-10 wt.%, respectively, based on the whole amount of the oiling agent.

    ROLLING ROLLER SURFACE POLISHING METHOD
    49.
    发明专利
    ROLLING ROLLER SURFACE POLISHING METHOD 失效

    公开(公告)号：JPH0857755A

    公开(公告)日：1996-03-05

    申请号：JP19831694

    申请日：1994-08-23

    Applicant: SUMITOMO METAL IND

    Inventor： YAMAMOTO HIDEO

    IPC: B24B47/20 ,  B21B28/02 ,  B21B28/04 ,  B24B5/37 ,  B24D5/14

    Abstract: PURPOSE: To provide a roller polishing method that can obtain excellent gloss and plane shape. CONSTITUTION: In a roller surface polishing method, the rotary shaft of a cylindrical grinding wheel with the circumferential face recessed in drum shape, and the rotary shaft of a roller are crossed within the plane parallel with the grinding face, an angle θformed by the circumferential speed vector VR of the roller and a polishing speed vector V0 is to be 80 deg.-100 deg., and the feed quantity of the grinding wheel is to be 1/2 or less of the roll axial projection width of the grinding wheels. Two grinding wheels with different grain sizes made rough on the front face side in relation to the feed direction are attached with the width thereof allocated at the integer ratio of 10 or less, and the grinding wheel with the circumferential face formed in drum shape is used with θ to be 80 deg.-100 deg. and the feed quantity to be not more than the roller axial projection width of the narrower side grinding wheel to polish the surface of a roller for rolling.

    PRODUCTION OF TITANIUM PLATE AND TITANIUM ALLOY PLATE EXCELLENT IN SURFACE GLOSS
    50.
    发明专利
    PRODUCTION OF TITANIUM PLATE AND TITANIUM ALLOY PLATE EXCELLENT IN SURFACE GLOSS 失效

    公开(公告)号：JPH079008A

    公开(公告)日：1995-01-13

    申请号：JP15641693

    申请日：1993-06-28

    Applicant: SUMITOMO METAL IND

    Inventor： YAMAMOTO HIDEO ,  OYAGI RYOTARO

    IPC: B21B1/22 ,  B21B3/00 ,  B21B27/00 ,  C22F1/00 ,  C22F1/02 ,  C22F1/18

    Abstract: PURPOSE:To produce a titanium plate and titanium alloy plate excellent in mirror gloss by cold rolling. CONSTITUTION:In cold rolling consisting of intermediate rolling and finish rolling, with using a work roll of >=22mm diameter and a rolling oil of 30-200cSt viscosity at 50 deg.C, the stock is subjected to intermediate rolling with the rolling reduction of 70% at least out of the total rolling reduction applied to a stock to be rolled in both intermediate and finish rolling. Subsequently, the stock is subjected to finish rolling at 20% draft at least with using a work roll having 20-150mm diameter, =Hv850 surface hardness and a rolling oil of 5-20cSt viscosity at 50 deg.C. Sucessively, after the stock to be rolled is washed as a post process of cold rolling, annealed in inert gas atmosphere or vacuum.

Patent Agency Ranking